the taliban claimed responsibility. this as u.s. officials issue new warnings that the death of osama bin laden ratcheted up the risk of anti-american violence worldwide. but counterterrorism and cia officials remain optimistic, saying al qaeda is on the brink of all-out collapse. >>> luiz gutierrez has been arrested outside the white house during a protest on immigration policy. it was the second time he was arrested outside a demonstration. he has since been released. >>> meantime, congressman david wu from oregon now says he will resign as soon as the debt ceiling crisis is resolved after allegations of sexual misconduct with an 18-year-old girl. >>> senators are blasting airlines for hiking ticket prices as the faa undergoes a partial shut down, this after congress failed to pass legislation last week to keep the agency fully operational. and while the faa is on hold, airlines are not able to collect ticket taxes which add up to $200 million per week, so they started raising fares without authorization. >>> now let's head to wal